| /* |
| * Copyright 1999,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.jasper.compiler; |
| |
| |
| import java.util.Vector; |
| import java.util.Hashtable; |
| |
| import org.apache.jasper.JasperException; |
| |
| /** |
| * Repository of {page, request, session, application}-scoped beans |
| * |
| * @author Mandar Raje |
| */ |
| class BeanRepository { |
| |
| private Vector sessionBeans; |
| private Vector pageBeans; |
| private Vector appBeans; |
| private Vector requestBeans; |
| private Hashtable beanTypes; |
| private ClassLoader loader; |
| private ErrorDispatcher errDispatcher; |
| |
| /* |
| * Constructor. |
| */ |
| public BeanRepository(ClassLoader loader, ErrorDispatcher err) { |
| |
| this.loader = loader; |
| this.errDispatcher = err; |
| |
| sessionBeans = new Vector(11); |
| pageBeans = new Vector(11); |
| appBeans = new Vector(11); |
| requestBeans = new Vector(11); |
| beanTypes = new Hashtable(); |
| } |
| |
| public void addBean(Node.UseBean n, String s, String type, String scope) |
| throws JasperException { |
| |
| if (scope == null || scope.equals("page")) { |
| pageBeans.addElement(s); |
| } else if (scope.equals("request")) { |
| requestBeans.addElement(s); |
| } else if (scope.equals("session")) { |
| sessionBeans.addElement(s); |
| } else if (scope.equals("application")) { |
| appBeans.addElement(s); |
| } else { |
| errDispatcher.jspError(n, "jsp.error.useBean.badScope"); |
| } |
| |
| putBeanType(s, type); |
| } |
| |
| public Class getBeanType(String bean) throws JasperException { |
| Class clazz = null; |
| try { |
| clazz = loader.loadClass ((String)beanTypes.get(bean)); |
| } catch (ClassNotFoundException ex) { |
| throw new JasperException (ex); |
| } |
| return clazz; |
| } |
| |
| public boolean checkVariable (String bean) { |
| // XXX Not sure if this is the correct way. |
| // After pageContext is finalised this will change. |
| return (checkPageBean(bean) || checkSessionBean(bean) || |
| checkRequestBean(bean) || checkApplicationBean(bean)); |
| } |
| |
| |
| private void putBeanType(String bean, String type) { |
| beanTypes.put (bean, type); |
| } |
| |
| private boolean checkPageBean (String s) { |
| return pageBeans.contains (s); |
| } |
| |
| private boolean checkRequestBean (String s) { |
| return requestBeans.contains (s); |
| } |
| |
| private boolean checkSessionBean (String s) { |
| return sessionBeans.contains (s); |
| } |
| |
| private boolean checkApplicationBean (String s) { |
| return appBeans.contains (s); |
| } |
| |
| } |
| |
| |
| |
| |